Finding the Third Proportional to 326,234.25 and 718,686

Step by Step Solution

1. Step 1: Write the proportion equation
   326,234.25 : 718,686 = 718,686 : x
2. Step 2: Convert to fraction form
   326,234.25/718,686 = 718,686/x
3. Step 3: Cross multiply
   326,234.25x = 718,686 × 718,686
4. Step 4: Simplify right side
   326,234.25x = 516,509,566,596
5. Step 5: Solve for x
   x = 516,509,566,596/326,234.25
6. Step 6: Final answer
   x = 1,583,247.52